Ice breaker Mackinaw clears path on frozen Lake Michigan by breaking the ice, United States.

The United States Coast guard Ice breaker Mackinaw clears path on frozen Lake Michigan. A view of the frozen lake. Mackinaw grinds solid ice. Ships underway on the clear path to Chicago. Buildings in the background. US infantry landing craft underway from Normandy and Sicily amidst high waves. US aircraft carrier underway. Men tie down aircraft on flight deck during typhoon.